Arm chair



FIG. 1 is a perspective view of an arm chair showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevation thereof, the left side elevation being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a cross section at 6--6 of FIG. 2. 

The ornamental design for an arm chair, as shown and described. 